HASH_SHA256
Purpose
This function computes a hash value by using the SHA256 algorithm (256 Bit).
Syntax
hash_sha256::=
Usage Notes
- Return values have data type CHAR(64) and contain hex characters.
- The data types of the input parameters are significant. That is why HASH_SHA256(123) is different from HASH_SHA256('123').
- Multiple input expressions are concatenated (in their internal byte representation) before the hash value is computed.
- The function returns NULL if all input expressions are NULL.
HASH_SHA256(c1,c2) is not similar to HASH_SHA256(c1||c2).